| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| /** |
| * @author Jorge Bay Gondra |
| */ |
| 'use strict'; |
| |
| const util = require('util'); |
| const inspect = util.inspect.custom || 'inspect'; |
| |
| /** |
| * Represents the response returned from the execution of a Gremlin traversal or script. |
| */ |
| class ResultSet { |
| |
| /** |
| * Creates a new instance of {@link ResultSet}. |
| * @param {Array} items |
| */ |
| constructor(items) { |
| if (!Array.isArray(items)) { |
| throw new TypeError('items must be an Array instance'); |
| } |
| |
| this._items = items; |
| |
| /** |
| * Gets the amount of items in the result. |
| * @type {Number} |
| */ |
| this.length = items.length; |
| |
| /** |
| * Access the raw result items via a property. |
| * @deprecated It will be removed in Apache TinkerPop version 3.4. |
| * Use <code>toArray()</code> or iterate directly from the <code>ResultSet</code>. |
| * @type {Array} |
| */ |
| this.traversers = items; |
| } |
| |
| /** |
| * Gets the iterator associated with this instance. |
| * @returns {Iterator} |
| */ |
| [Symbol.iterator]() { |
| return this._items[Symbol.iterator](); |
| } |
| |
| /** |
| * Provides a representation useful for debug and tracing. |
| */ |
| [inspect]() { |
| return this._items; |
| } |
| |
| /** |
| * Gets an array of result items. |
| * @returns {Array} |
| */ |
| toArray() { |
| return this._items; |
| } |
| |
| /** |
| * Returns the first item. |
| * @returns {Object|null} |
| */ |
| first() { |
| const item = this._items[0]; |
| return item !== undefined ? item : null; |
| } |
| } |
| |
| module.exports = ResultSet; |